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Finding the Fourth Proportional to 1,761.45, 2,642.93 and 837.66

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Solution

The fourth proportional to 1,761.45, 2,642.93 and 837.66 is: 1,256.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.45 : 2,642.93 = 837.66 : x
  2. Step 2: Convert to fraction form
    1,761.45/2,642.93 = 837.66/x
  3. Step 3: Cross multiply
    1,761.45x = 2,642.93 × 837.66
  4. Step 4: Simplify right side
    1,761.45x = 2,213,876.74
  5. Step 5: Solve for x
    x = 2,213,876.74/1,761.45
  6. Step 6: Final answer
    x = 1,256.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.